Alright, let's work through 40306219 times 63679101 step by step
40306219 × 63679101 = 63679101 × (40306219)
+ 63679101 × 9 what gives us 573111909
+ 63679101 × 10 what gives us 636791010
+ 63679101 × 200 yielding 12735820200
+ 63679101 × 6000 what gives us 382074606000
+ 63679101 × 00000 which equals 0
+ 63679101 × 300000 yielding 19103730300000
+ 63679101 × 0000000 resulting in 0
+ 63679101 × 40000000 that equals 2547164040000000

= 2566663790629119
